Hankel determinant for functions starlike and convex with respect to symmetric points

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Hankel determinant for functions starlike and convex with respect to symmetric points

Sakaguchi (1959) introduced the class of functions S*s , starlike with respect to symmetric points. In 1977, Das and Singh introduced similar class of functions Cs , convex with respect to symmetric points. Here, upper bound for the functional |a2a4-a23| is attained for functions f(z)=z+ ∑ anzn...

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Bibliographic Details
Main Authors:	Aini Janteng, Suzeini Abdul Halim, Maslina Darus
Format:	Article
Published:	Penerbit ukm 2006
Online Access:	http://journalarticle.ukm.my/1819/

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